The Minimum Admissible Detuning Efficiency of MRI Receive‐Only Surface Coils

BACKGROUND: during excitation. Previously proposed criteria for quantifying the DE rely on indirect measurements and are difficult to implement. PURPOSE: To present an alternative method to quantify the DE of receive-only surface coils. STUDY TYPE: Theoretical study supported by simulations and phantom experiments. PHANTOMS: Uniform spherical (100 mm diameter) and cylindrical (66 mm diameter) phantoms. FIELD STRENGTH/SEQUENCE: mapping sequence at 3.0T. ASSESSMENT: maps to assess the validity of the theoretical analysis. STATISTICAL TESTS: None. RESULTS: field generated by the transmission coil was not modified by the receive coil. DATA CONCLUSION: field. EVIDENCE LEVEL: 2 TECHNICAL EFFICACY: Stage 1.